{ *56 ] 
See Tab. I. Fig. i. 
A. A common Retort in a Sand-Heat. 
B. The firft Receiver, with an Opening at the Top 
and Bottom. 
C. A Quart-Bottle fixed to a Neck out of the Bot- 
tom of the Receiver ; which, being tied on clofe 
by means of a Bladder, may be removed at any 
time, and another inftantly placed in its Room ; 
by which means, very little of the Steam will 
make its Efcape : And any Proportion of the vola- 
tile Part to be diftilled may be faved by itfelf, with- 
out unluting tfie Recipient from the Retort. 
*D. A fecond Receiver, inferred into the Opening at 
the Top of the firft, in order to give more Room 
to the rarefied and new-generated Air, and to re- 
ceive the moft fubtile and volatile Parts, which 
might not be fo eafily contained in the firft Re- 
cipient, without great Danger of breaking it, or 
forcing the Luting. 
E. A fmaller Bottle, for the fame Ufes as the other, 
mark'd C. 
F. A Bladder tied on to an Opening, or upper Neck, 
of the fecond Recipient } which, as it is much 
thinner and weaker than any of the Glafles, will 
always give Way firft, and prevent their burfting. 
Or, wherever the Matter to be diftill'd is of fuch 
a Nature, that, we are fure, all the Glaftes, put to- 
gether, will not contain the Fumes and Air arifing 
from it} then, if the fmalleft Pin-hole be made 
thro’ the Top of the Bladder, as foon as the Fumes 
begin to rife, it will be fufficient to let out the 
Air as faft as it generated : And, I think, at that 
great Diftance from the Fire, very little, if any 
thing, but Air, can make its Efcape. 
Hence 
